package intercepter;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;



public class LoginIntercepter implements HandlerInterceptor{

	@Override
	public void afterCompletion(HttpServletRequest arg0,
			HttpServletResponse arg1, Object arg2, Exception arg3)
			throws Exception {
		
	}

	@Override
	public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1,
			Object arg2, ModelAndView arg3) throws Exception {
		// TODO Auto-generated method stub
		
	}

	@Override
	public boolean preHandle(HttpServletRequest request, HttpServletResponse response,
			Object handler) throws Exception {
		
		if(request.getRequestURI().indexOf("login")>=0){
			return true;
		}
		
		HttpSession session=request.getSession();
		
		if(session.getAttribute("user")!=null){
			return true;
		}
		
		//request.getRequestDispatcher("/login.jsp").forward(request, response);
		response.sendRedirect(request.getContextPath()+"/login.jsp");
		return false;
	}

}
